Home / 3,141.54-4,336.20-1,815.78

Finding the Fourth Proportional to 3,141.54, 4,336.20 and 1,815.78

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Solution

The fourth proportional to 3,141.54, 4,336.20 and 1,815.78 is: 2,506.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.54 : 4,336.20 = 1,815.78 : x
  2. Step 2: Convert to fraction form
    3,141.54/4,336.20 = 1,815.78/x
  3. Step 3: Cross multiply
    3,141.54x = 4,336.20 × 1,815.78
  4. Step 4: Simplify right side
    3,141.54x = 7,873,585.24
  5. Step 5: Solve for x
    x = 7,873,585.24/3,141.54
  6. Step 6: Final answer
    x = 2,506.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.